1231597074497 has 4 divisors (see below), whose sum is σ = 1271326012416. Its totient is φ = 1191868136580.

The previous prime is 1231597074481. The next prime is 1231597074511. The reversal of 1231597074497 is 7944707951321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1231597074497 - 2⁴ = 1231597074481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231597077497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19864468913 + ... + 19864468974.

It is an arithmetic number, because the mean of its divisors is an integer number (317831503104).

Almost surely, 2^{1231597074497} is an apocalyptic number.

It is an amenable number.

1231597074497 is a deficient number, since it is larger than the sum of its proper divisors (39728937919).

1231597074497 is an equidigital number, since it uses as much as digits as its factorization.

1231597074497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39728937918.

The product of its (nonzero) digits is 13335840, while the sum is 59.

The spelling of 1231597074497 in words is "one trillion, two hundred thirty-one billion, five hundred ninety-seven million, seventy-four thousand, four hundred ninety-seven".